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Date: Fri, 5 Apr 2019 09:50:24 +0100
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To: PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Spread Operator in Array Expression v0.2
From: rowan.collins@gmail.com (Rowan Collins)

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On Fri, 5 Apr 2019 at 09:31, Micha=C5=82 Brzuchalski <michal@brzuchalski.co=
m>
wrote:

> The next paragraph in MDN document is spread operator for object literals
> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operato=
rs/Spread_syntax#Spread_in_object_literals
> Now JavaScript objects can be used like our array with keys and I simply
> don't understand why we cannot preserve keys, like in JS object literals
>


The original draft discussed this, but there wasn't agreement on how
identical keys should be handled, e.g.:

$a =3D ['foo' =3D> 1, ...['foo' =3D> 2]]

Should $['foo'] be 1 or 2? Cases were made for both, and it was pointed out
that if we get named arguments, the argument spread operator will need to
work the same way as whatever is decided for arrays.

So the current approach is to get integer keys working first, using the
same behaviour as for parameters, and then revisit string keys later.

Regards,
--=20
Rowan Collins
[IMSoP]

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